Koushirou Kamura

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Embryogenesis of PANAX GINSENG was induced from young flower buds via callus during a 3 months culture period. Matured embryos could be germinated on the 1/2 Murashige and Skoog's medium supplemented with GA (3) (1.4 microM)-BAP (2.2 microM) and 1.5% sucrose. In the medium containing 1.4 microM GA (3) and 11.1 microM BAP, a multiple shoot complex having 8(More)
The injection of bacteria (Staphylococcus aureus, Stenotrophomonas maltophilia) or true fungi (Candida albicans, Candida tropicalis) that are pathogenic to humans into the silkworm hemolymph leads to death of the larvae within 2 days. Antibiotics used for clinical purposes have therapeutic effects on silkworms infected with these pathogens. The 50%(More)
Inactivation of topoisomerase (topo) IIalpha arrests murine embryonic development. In topo IIalpha-depleted embryos, nuclei were partitioned to daughter cells without complete separation and formed an interconnecting droplet-like structure. The present study examined the fates of topo IIalpha-depleted cells with the droplet-like nuclear structure. When the(More)
BACKGROUND Glycophorin A (GPA) has a large number of sialic acid-containing oligosaccharide chains. GPA is highly conserved among vertebrates, mice with a GPA deletion have not been reported and GPA's physiologic role remains uncertain. RESULTS GPA-/- homozygotes were obtained by intercrossing GPA+/- heterozygotes based on Mendelian genetics. The amount(More)
Shoot tips and axillary buds of ACONITUM CARMICHAELI Debx. cultured in Murashige and Skoog medium supplemented with 5 ppm BAP at 25 +/- 1 degrees C under continuous light for 6 weeks formed multiple shoots with an average of 7 shoots per culture. Multiple shoot forming ability does not decrease at least for 6 generations. Subsequent culture of these shoots(More)
We previously reported that therapeutic drug effects in the silkworm infection model are largely influenced by midgut permeability. In this report, we describe the effects of drug molecular mass and hydrophobicity on transport through the silkworm larva midgut membrane. Hydrophilic compounds with a molecular mass of greater than 400Da did not permeate the(More)
We studied the potential role of the Duffy antigen and glycophorin A as receptors for rodent malaria parasite invasion of erythrocytes. Parasitemia increased exponentially after infection with Plasmodium berghei NK65, P. chabaudi, and P. vinckei in Duffy antigen knockout, glycophorin A knockout, and wild-type mice, indicating that the Duffy antigen and(More)
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